A RELAX - TYPE MAGNETOMETER USING AMORPHOUS RIBBON CORE

被引：9
|
作者：
PRASLICKA, D
机构：
[1] Air Force Academy, Department of Electronics, 040 21 Košice, Slovakia
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 02期
关键词：
D O I：
10.1109/20.312450
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A magnetometer for digital analysis of a magnetic field is presented. The method-of measuring is based on the detection of the coil relaxation time, after its excitation up to saturation by means of short current pulses. The time detection uses a voltage limiter, before an active comparation. An external magnetic field causes a width modulation of the relax-pulses, due to the total comsumption of the supplied energy. The width of the relax-pulses is evaluated by counters and, after buffering, picked up to IBM/PC parallel I/O. The sensitivity of the present magnetometer is 10nT from DC up to 500Hz and 100pT up to 5Hz, in real time.Data analysis could be utilized for autonomical navigation systems, as well as for an industrial, enviromental and medical use.
引用
收藏
页码：934 / 935
页数：2
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